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Homework Help: Ideal opamp output current

  1. Sep 2, 2011 #1
    Hi,

    Just a general question. For an ideal opamp, does any current flow from its output terminal?

    What is the reasoning behind whatever the answer is?

    Thanks
     
  2. jcsd
  3. Sep 6, 2011 #2

    rude man

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    Homework Helper
    Gold Member

    An ideal op amp would have infinite output current capability. In other words,
    Vo = -Rf/Ri*Vi no matter how low Rf and Ri are (inverter configuration assumed).

    EVERY op amp has some output current or they'd be completely useless except as non- inverting buffers (<= unity gain).


    Did you maybe mean INPUT currents? An ideal op amp has zero input currents.
     
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